For those lost in the skips, let's do a quick recap:
* Guy got isekai summoned to a kingdom, but causes an unholy mess because is a veritable badass swordsman trained the spartan way on earth and escapes to a neightbring kingdom.
* He rescues the twin slaves along the way and they stick with him. He becomes a mercenary, joins with other mercs and gets involved in a succession civil war on the side of the princess.
* Recruits a retired badass female general, contributes greatly to the war and because of him, the princess wins the war and is crowned. The mercs tag along for the ride.
* For his efforts (and to not let him go) he gets appointed as the new feudal lord of the Wortenia peninsula: a veritable hive of scum an villainy with pirates being the lesser problems.
* With "help" of the frontier lord and the merchant lady shown on at the end of this chapter, he manages to buy a bunch of slave kids, trains them and makes them an army. Some of them show on this chapter.
* With that, he select his first target: the pirates, as he promised the merchant lady in exchange of her help. The port city being built is part of the deal as a new trade route.
* Also, his female friend back on earth and daughter of the MC's master and two cops got summoned later on the same kingdom he was, but also escape. Right now, we don't know what happened to them, but on of the cops was badly hurt.
Hope it helps. I left out the names because I only partly remember them and IDK if the people will remember them anyway...